I also tried building the lighting, but the bug is still there, I tried to change the intensity of the lights and that changes nothing, I also tried puting less lights and that removed a big part of the error, but there’s still some shadows poping in and out, I don’t really know if it could be my GPU, it also happened before, a friend of mine send me a map and then i had the same shadow bug, i actually have a GTX 1660 SUPER and I have already updated the drivers, if that helps